I know you all are in the us, but if you have the chance, try out the HACKER NIVEL #1 #2 #3 #4,
those are balls of different level and price, very durable and cheaps,
but to compare #1 are like a Wimbledon slazenger, (about 7 u$s)
you choose your ball in order to the weather you are playing,
you can get them in Argentina, (Hacker is the second brand of babolat, specialized in accesories)